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Core Sample Of Universe Illuminates Cosmic Web Almost 11 Billion Light Years Away

by Michael Keller

Astrophysicists have developed a new sensing technique to map a section of the universe 10.8 billion light years from Earth, the first time such detail has been seen over this immense distance. Peering through that much space has opened a portal to get a clearer view of what our adolescent universe looked like 3 billion years after the Big Bang.

Using extremely faint light from 24 densely packed galaxies almost 11 billion light years away from our planet, the team was able to discern lower and higher densities of hydrogen gas in between the distant celestial bodies and us. Their work has illuminated the physical structure of the cosmic web, the tangled network upon which all matter is arranged, in one large region of the sky. 

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Key To LED Lighting Revolution Wins Three Physics Nobel

by Michael Keller

Three people will split the 2014 Nobel Prize in Physics for their role in ushering in a revolution in lighting, the prize committee announced today.

Two Japanese citizens, Isamu Akasaki and Hiroshi Amano, and American Shuji Nakamura garnered science’s top honor for developing a light-emitting diode (LED) bulb that could produce bright blue light.

The innovation made it possible to generate clean white light from LEDs, which until then had been able to make light from longer infrared wavelengths to red and green. White light is made from combining red, green and blue wavelengths.

“Using blue LEDs, white light can be created in a new way,” the committee wrote in their announcement. “With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources.”

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